Réponses

2014-09-10T13:21:18+02:00


1/ A = (2x+3) x 4

2/ A = 2x x 4 + 3 x 4

3/ si A = 36 alors L = A : l

donc 36:4 = 9

2x+3 = 9

x=3


2014-09-10T14:11:55+02:00
Bonjour!
Voila :
1) A = (2x+3) x 4
2) A = 2x x 4 + 3 x 4
3) A = 36 donc : L = A : l donc 36:4 = 9 
2x+3 = 9
x=3
Si tu as des questions n'hesites pas!.... :)